Typewriting-machine



J. DUCKSTINE.

TYPEWRITING MACHINE.

APPLICATION FILED auems. I918. RENEWED JULY 10. 1920.

Patented Feb. 15, 1921.

3 SHEETS-SHEET I.

J. DUCKSTINE.

TYPEWRITING MACHINE.

APPLICATION FILED AUG. 15, I918. RENEWED JULY 10, 1920,

Patented Feb. 15, 1921.

3 SHEETSSHEET 2.

J. DUCKSTINE.

TYPEWRITING MACHINE.

, mmcmou FILED AUG. 15, 1918. RENEWED JULY 10, 1920. 1,368,492.

Patented Feb. 15, 1921.

3 SHEETSSHEET 3' JULIUS DUCKSTINE, OF NEW YORK, N. Y., ASSIGNOR T UNDERWOOD TYPEWRITEE COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

sesnea.

Specification of Letters Fatent.

Application filed August 15, 1918, Serial No. 249,989. Renewed July 10, 1920. Serial No. 395,339.

T 0 all whom it may concern:

Be it known that I, JULIUS DUGKSTINE, a citizen of the United States, residing in New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Typewriting-Machines, of which the following is a speci fication.

This invention relates to typewriting machines used for typing upon webs which are fed into the machineinsuperposed layers or plies, sectionsof the webs being cut off as they are typed; and the carbon sheets, which are interposed between the plies, being drawn back preparatory to typing upon fresh sections of web.

The object of this invention is to provide simple, inexpensive and practical means for facilitating the drawing back of the can bons. Since the work web, with its inter leaved carbons, pursues a tortuous course through the typewriting machine, especially where the. web runs around the platen and up in front thereof, there occurs such a binding actionbetween the carbons and the plies of web as to prohibit the pulling back of the carbons.

According to the present'invention, there is provided a rack of superposed sheet guides, aprons, or chutes, through which the webs and carbons are threaded and thereby separated from one another. These separators may curve around the under side, of the platen to ease the carbons and thereby permit the latter to be pulled back as required; said rack or set of guides or separators being shiftable to a position in rear of the platen, so as to normally permit the use of the feed rolls whichrun upon the under side of the platen. The carbons and webs, of course, may continue to advance through this rack when the latter is in its rear or idle position; and at any time the rack may be swung downwardly under the platen to separate the binding portions of the sheets from one another, and thereby facilitate the drawing back of the carbons.

Certain features disclosed herein are also disclosed in my co-pending application No. 244,285, filed July 10,1918. 1

()ther features and advantages will hereinafter appear.

in the accompanying drawings,

Figure 1 is a sectional side elevation of to binding upon one another, so that the carbons may be slipped back along the guldes whlle the webs remain stationary.

Fig. 4 is a perspective front view, partly in section ofthe platen, and a rack of sheetguiding aprons or shells, and also a rack of guiding parts which cooperate therewith, the parts being in normal positions.

The plies ofweb 10 and carbon 11 are alternately threaded between segmental shell-like smooth guides 12 nested at the receivlng side of the platen to form chutes,

and advanced under and around the platen to and past the printing point. Each web and carbon underlies a guide 12, Fig. 3, except the innermost web or ply, which of course is contiguous to the platen. The

Patented Feb. raiser.

til)

guides are for the purpose of separating the carbons and the "webs from one another, thereby preventing binding and permitting the independent movement of the carbons,

, even though the course of the webs and carbons is tortuous, since the carbons slip easily 7 over the smooth metal guides without rubbing upon the work webs and hence are not bound thereby.

The leading ends of the work webs and carbons may be inserted one after another in the chutes or between the guides at Fig.

2, the bottom web being inserted first, then the bottom carbon, then the next web, then the next carbon, etc. These are all thrust forward through the chutes until they ad Vance between the platen and the rear feed roll 13, whereupon the usual feed roll re lease key 14 is restored to normal position, permitting the rolls 13 and 15 to press the assemblage of sheets against the under side of the platen 16. The platen is then rotated until the sheets reach typing position, Fig.

2, whereupon the types 17 are operated to make" the usual impressions through the lnk ribbon 18 upon the work-sheets.

As soon as the typing of a bill or a section of the web is completed, the work web may be advanced until its leading edges reach a gage 19, which is mounted adjustably upon a staff 20, extending upwardly from a shelf at the delivery side of the platen. This brings the webs to a position to begin the typing of the next form or bill. -The feed rolls 13,15may then be cast oft by means of the release key 14, and the rack of separating aprons 12 may 'be swung downwardly and forwardly under the platen, Fig. 3, the feed rolls-l3, 15 having dropped far enough to permit this; and a general guiding apron 21, permanently mounted beneath the platen, may also drop about its hinge 22, to give clearance for said rack, as the latter swings forwardly under the platen. This movement of the rack may be efiected by grasping a handle 23, which is provided upon an arm 24, which is pivoted loosely upon the platen axle 25, and is in the form of an extension of a vertical plate I 26 which cooperates with a companion plate 27 loosely journaled upon the other end of the'platen axle, to carry the sheet-separators or guides 12, which are curved around the platen and extend therealong and are nested and arranged in the manner illustrated, so

as to facilitate the movements of the sheets at all times.

To ease the movements of the webs and carbons,'the latter are led forwardly over a set of horizontal guide-bars 28, these bars formin a rack extending along the platen at the introductory side thereof, at such a height as to be about on a level with the webs and carbons, the latter advancing to the t pewriter carriage from the rear, as will be understood from the Wernery & Smith Patent, No. 1,132,055. During the typing operation, these guide-bars 28, at the intake ends of the chutes 'or sheet-guides, occupy positions near the platen; but when said chutes are swung forwardly beneath the platen, said guiding bars 28 are automatically swung backwardly to such positions that they ease the movements of the webs and carbons, which at this time do not make such sharp bends over the bars as at Fig. 2. For this movement, the guide-bars are mounted upon a pair of arms 29, which are rigidly connected by said bars; said arms being plvoted or hinged upon studs or trunnions 30 at the ends of the platen frame, forming with the rods 28 a swinging frame, which may be connected by a pair of links 31 to the plates 26, 27, which carry the curved guides or shells 12. A pairof detent springs 32 may be employed in connection with a notched dog 33 upon arm 29. to hold the sheet-guiding devices in normal positions, seen atFigs. 1,2 and 4, or in the posi- I tionseen at Fig. 3', preparatory to pulling completed, and then the work-webs are I drawn forwardly through the guides while the carbons remain stationary, until the lead ing ends of the work-webs are adjusted to the gage 19, to determine the length of the portions to be torn ofl. The severing, which may be accomplished in any convenient manner,'occurs just above the tops of the carbons at Fig. 1, and the typing of the fresh form proceeds.

Thus it will be seen that an advantage is gained by having the sheets separated for relative movements. During the typing operation, the sheets may be all held against the platen by the bottom feed rolls, for which passages or openings 34 are provided in the main paper-apron 21.

It wil be understood also that the platen may be shifted up and down for capital and lower-case letters, inasmuch as it is not necessary to displace the platen as set forth in straightening out the sheets.

Variations may be resorted to within the scope of the invention, and port-ions of the improvements may be used without others.

Having thus described my invention, I claim:

1. In a typewriting machine, the combination with a cylindrical platen and means for feeding work-sheets thereabout, of a sheetseparator for said sheets, movable from a' normal position, at the rear of said platen, to an effective paper-separating position underneath the same.

2. In a typewriting machine, the combination with 'a cylindrical platen and means, including a releasable feed-roll, for feeding work-sheets thereabout, of a sheet-separator for said sheets, movable from a normal position, at the rear of said platen, to an efiective position underneath the same, and between said platen and said feedroll when released. 1

3. In a typewriting machine, the combination with a cylindrical platen and means for feeding work-sheets thereabout, of a plurality'of sheet-separators connected in superposed spaced relation, said separators beseparating position underneath the same.

4. In a typewriting machine, the combination with a cylindrical platen and means, including a releasable feed-roll, for feeding work-sheets thereabout, of a plurality of sheet-separators connected in superposed spaced relation, said separators belngmovable from a normal position, at the rear of said VVernery & Smith patent, for.

'ing movable from a normal position, at the. rear of said platen, to an efiective paper said platen, to an effective paper-separating position underneath the same, and between said Platen and said feed-roll when released.

5. In a typewriting machine, the combination with a cylindrical platen, of a series-of segmental shell-like sheet separators'nested together, and means whereon said separators are mounted to swing from a position under the platen to a position in rear of the platen.

6. In a typewriting machine, the combination with a cylindrical platen and means for feeding work-sheets thereabout, of a sheetseparator, for said sheets, movable from a normal position, at the rear of said platen, to an effective paper-separating position underneath the same, and mounting means for guiding said separator .from one of said,

positions to the other.

7. In a typewriting machine, the combination with a cylindrical platen and means for feeding work-sheets thereabout, of a plurality of sheet-separators connected in superposed spaced relation, said separators being movable from a normal position, at the rear of said platen, to an effective paper-separating position underneath the same, and mounting means for guiding said separators from one of said positions to the other.

8. In a typewriting machine, the combination with a cylindrical platen and means, including a releasable feed-roll, for feeding work-sheets thereabout, of a plurality of sheet-separators connected in superposed spaced relation, said separators being movable from a normal position, at the rear of said platen, to an efiective paper-separating position underneath the same, and between said platen and said feed-roll when released; and mounting means for guiding said separators from one of said positions to the other.

9. The combination with a revoluble platen, of'a rack of superposed sheet guides shiftable from a position where they curve around the under side of the platen to a position in rear of the platen, a releasable feed roll to run upon the under side of the platen, ermanentlyv and a paper apron mounted unlder the platen to cooperate wlth said feed ro 10. The combination with a revoluble platen, of a rack of superposed sheet guides shiftable from a position where they curve around the under side of the platen to a position in rear of the platen, a releasable feed roll to run upon the under side of the platen, and a paper apron mounted permanently under the platen to cooperate with said feed roll, said paper apron hinged to permit it to drop to, permit the shifting of said sheet guides to a position under the platen.

11. The combination with a revoluble platen, of a releasable feed roll to run on the under side thereof, a nest of sheet-guiding shells in rear of the platen and normally standing in position to direct the sheets toward the bite of said feed roll and platen, and means whereby said nest of shells may be advanced to a position between the platen and the feedroll, to facilitate the independent relative shifting of carbon-sheets and work-sheets. I

12. The combination with a revoluble platen and a platen frame, of 'a nest of segmental shells forming sheet guides and plates orsupports to which said shells are attached at their ends, said supports hinged upon said platen frame to shift said shells from a posltion under the platen to a position in rear thereof.

13. The combination with a revoluble platen, of a releasable feed roll to run on the under side thereof, a nest of sheet-guiding shells in rear of the platen and normally standing in position to direct the sheets toward the bite of said feed roll and platen, means whereby said nest of shells may be advanced to a position between the platen and the feed roll, to facilitate the independent relative shifting of carbon-sheets and work-sheets, and means to hold the shells in either forward or rearward position.

14;. The combination with a revoluble platen, of a releasable feed roll to run on the under side thereof, a nest of sheet-guiding shells in rear of the platen and normally standing in position to direct the sheets toward the bite of said feed roll and platen, means whereby said nest of shells may be advanced to a osition between the platen and the feed rol to facilitate the independ ent relative shifting of carbon-sheets and work-sheets, and a movable set of guide bars at the introductory side of said shells.

15. The combination with a revoluble platen, of a releasable feed roll to, run on the under side thereof, a nest of sheet-guiding shells in rear'of the platen and normally standing in position to direct the sheets toward the bite of said feed roll and platen, means whereby said nest of shells ma be advanced to 'a position between the p aten and the feed roll, to facilitate the independent relative shiftin of carbon-sheets and work-sheets, a mova 1e set of ide bars at the introductory side of sai shells, and means connecting said guide bars to said shells to shift the guide bars rearwardly as the shells are shifted downwardly and forwardl 16. The combination with a revoluble platen, of a releasable feed roll torun on the under side thereof, a nest of sheet-guiding shells in rearof the platen and normally standing in position to direct the sheets toward the bite of said feed roll and platen, means whereby said nest of shells may be advanced to a osition between the platen and the feedrol l, to facilitate the independwork-sheets, a move le set of guide bars at the introductory side of said shells, arms upon which said guide bars are mounted, and means whereby said arms may be swung to carry said bars from a forward osition adjacent to the intake edges of the s ells or guides, to a rearward position in which the bending of the work-sheets around the guide bars is reduced.

17. The combination with a 'revoluble platen, of a releasable feed roll to run on the under side thereof, a nest of sheet-guiding shells in rear of the platen and normally standing in position to direct the sheets to-' ward the bite of said teed roll and platen, means whereby said nest of shells may be advanced to a position between the platen and the feed roll, to facilitate the independent relative shifting of carbon-sheets and work-sheets, a movable set of guide bars at the introductory side' of said shells, arms upon which said guide bars are mounted, and means connecting said guide bars to said shells whereby said arms may be swung to carry said bars from a forward position adjacent to the intake edges of the shells or guides, to a rearward position in which the bendingof the work-sheets around the guide bars is reduced.

JULIUS DUCKSTINE. Witnesses:

EDITH B. LIBBEY, JnNNm P. Tnonnis. 

